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Linux Kernel F2FS File System Race Condition Vulnerability in Atomic Write Handling

Vulnerability

A race condition vulnerability has been addressed in the Linux kernel's F2FS (Flash-Friendly File System) implementation. This vulnerability, related to the handling of atomic writes, could lead to inconsistent file states. The issue was resolved by introducing inode locking and allowing copy-on-write (COW) inodes to be reused throughout the entire lifetime of atomic file inodes. The vulnerability was reported by a syzbot instance.

Impact

The vulnerability could cause race conditions during atomic write operations, potentially leading to data corruption or inconsistencies in file handling.

Added: Dec 9, 2025, 4:21 PM
Updated: Dec 10, 2025, 12:31 AM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
3.5
remediation
7.7
relevance
1.3
threat
3.2
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.